PTT Global Chemical Public Company Limited (GC) acknowledges the significance of the Internal Audit function as an important mechanism to drive and support the organization's objectives in achieving Good Corporate Governance, Operation Efficiency and Effectiveness, and Reliability of the Financial Report. To lead the organization towards a successful and sustainable future, GC has aligned its business with related policies, rules, regulations, standards, procedures, and other laws, and defines

the Scope of Internal Audit as follows:

Internal Audit Policy